Radiotube-holding device



June 21 1927. 1,633,041

A. E. SCHUFFENHAUER RADIOTUBE HOLDING DEVICE Filed Ap'ril 13, 1925 2 sheets-sheet 1 1,633,041 June 21 1927' A. E. scHur-'FENHAUER RADIOTUBI)| HOLDING DEVICE Filed April 13, 1925 2 Sheets-Sheet 2 'Patented June 21, 1927.

UNITED STATES E. SCHUFFENHAUER, 0F CHICAGO, ILLINOIS.

BADIOTUBE-HOLDING DEVICE.

Application :filed April 13, 1925. Serial No. 22,520.

object is to provide means for pressing the contact posts of the tube into firm engagement with the supporting sockets on the device, so as to provide a full and complete electrical connection on each contact post. A further object is to provide means on the supporting'sockets for engaging and scraping the contact posts in order to remove any film of corrosion from said posts thus avoiding losses due to such corrosion. And a further object is to providel the base of the device with a central mounting hole to avoid the use of the ordinary plurality offastening elements,'and to place the strain upon the base in the properA position between the supporting springs and sockets, thus also providing for the placing of the sockets in any .desired position on the base.

Other objects will appear hereinafter.

The invention consists in the combinations and varrangements of parts hereinafter described and claimed.

rlhe invention will be best understood by 4reference to the accompanying drawings, forming a part of this specification, and in which,

Fig. 1 is a vertical sectional view of the invention, taken on line 1-1 of Fig. 2, with the radio tube mounted in position thereon;

Fig. 2 is a plan View of my invention;

Fig. 3 is a vertical sectional view t-aken on line 3.-3 .of Fig.- 2;

Fig. 4 is a vertical sectional view similar to Fig. 3, but showing separate post engaging elements fastened on the supporting springs and entering into the sockets from the puter sides, instead of from the inner sdesasl in Fig. 3;

Fig. 5 is an inverted view of the bottom of the radio tube;

Fig. 6 is a vertical sectional view of a slightly modified form of my invention taken on line 6 6 of Fig. 7 with the radio tube mounted in position thereon;

Fig. 7 is a plan view of this modified form of the invention;

F ig. 8 is an elevational view of the radio tube, which is mountable on my device;

Fig.r9 is a vertical sectional view taken on line 9-9 of Fig. 7; and

Fig. l() is an'enlarged vertical sectional view showing the connection between the post supporting socket and the contact post of the radio tube.

The form of my invention illustrated in Figs. 1 to 5 comprises a base 13 which is of insulating material and provided with the usual openings 14 for receiving suitable fastening elements, and with a central opening 15 for receiving a fasteningelement 16 to fasten the socket in`position' on a suitable supporting member 17 of the receiving set. By providing the central opening 15 for fastening the base in position, the usual openings 14 are notI needed nor made use o and the supporting sockets and the elements for holding the same may be placed in any desired position on the base without regard to the usual fastening openings 14. Spring members 18 are mounted on base member 13,' 'and preferably by the use of `binding postsv19 with the .usual lower and upper nuts 20 and 21 for receiving the wires of the receiving set. Openings 22 are preferably'also provided on the outwardly eX- tending ends of spring members 18, so as to receive the conductor wires and permit them to be soldered thereon to form a firm' and intimate connection. The spring arms are bent upwardly and inwardly to have the inner ends spacedA from the base member, as shown in the drawings, andk sockets or cup-shaped members 23 are mounted on the inner ends of said members 18, the upper `ends being bevelled, as shown at 23 to facilitate the entrance of the conta-ct l posts 24 of the radio tube 25. Curved'portions 26 are provided on the inner ends of the spring arms 18, and are preferably formed integral therewith, and extend through slots 27 atfthe inner sides of said sockets tol press against contact posts 24 and hold the same firmly against the side walls of the sockets, as best indicated in Fig. 10. The lower edges 28 of curved portions 26 are sharpened, as best shown in Fig. 3, to firmly engage and scrape along the posts 24 in order' to remove any film of corrosion therefrom which may be formed durin the use of the device. A screw or similar olding element 29 is extended through a slot 30 1n spring arm 18, being fastened in base 13, and its -head limits the upward movement of the stems 34 formed on their lower portion to fasten said elements 26 as well as the sockets 33 upon the arms 18', while the edges 28 of elements 26 engage through o enings 27 provided on the outer` sides o. the sockets. Screws or fastening elements 29 extend through slots 30 in arms 18 and are fastened into` the base, as in the preceding form. Openings 22 are also provided on the outwardly extending ends of 'the spring arms for firmly fastening the conductor wires thereon. A fastening element 16 extends through a central opening 15 in base 13 to fasten the same to a suitable su ortingmember 17 of the receiving set.

eans is provided for guiding the contact posts 24 of the radio tube in the proper sockets 23, and this means preferably in` cludes a pair of arms or bars 35 and 36 which are fastened. upon base 13 with suitable fastening members, and have a. yring or circular band 37 mounted at their upper ends' for receiving the lower portion of the tube. A. slot- 38 is provided in the upper end of one of the posts and the band for receiving a pin 39 extending from the tube, in order to assureI the correct placing of the contact post 24 in the proper sockets 23. In Figs. 6 to 10 inclusive I have illustrated a further modified form of my invention, and this form comprises a base 43 of suitable insulating material, and which is p rovided with the usual openings 44 x.for fastening the-device, and which base I further provide with a central 'opening 45 for receiving a central fastening element 46 to fasten the socket in position on a suitable supporting member 47of the receiving set. Byproviding the opening 45 at the center o the base member, the usual openings 44 may be disregarded, and the socket members with their supporting`- spring arms may be placedI in kany desired position on the base without paying particular 'attention to .the positions of the usual openlngs 44. Spring the conductor wires may be fastened and soldered therein to form an intimate and close connection. The spring arms are bent upwardly and inwardly providing curved portions or humps 48 from which the said arms extend inwardly in portions 48 spaced from the base members 43. Sockets or cup-shaped members 53 are mounted at the end of said spring members 48, the upper ends of said sockets being bevelled, as shown at 53', to facilitate the insertion of the contact posts 24 of the radiotub'e. Upwardly and inwardly curved. ortions 56 are provided at the inner ends o the springv arms, and may be formed integral therewith as shown in Fig. 10, or may be separately yprovided and fastened on the spring arms,

as shown in Fig. 4. The edges of said curved portions 56 are bevelled to provide downwardly extending edges 58, as best shown in Fig. 10, which extend through slots 57 in said sockets 53 and engage the contact posts 24 to press them firmly against the inner walls of the sockets, and to remove any film of corrosion that may be formed on the contact posts, when said posts are moved vertically in the sockets. A suitable holding element or screw 59 is extended through an opening or slot 60 in the portion 48 of each spring member and is fastened in the base 43, to limit the upward movementv of the spring memberv when a radio tube is withdrawn. nA bar or post 61 is mounted on the base with suitable fastening means, and has a slot 62 at its upper end for Areceiving the pin 39 of tube 25, as in the form illustrated in Figs. 1 to 4, so as to properly guide the individual contact posts 24 into the correct sockets 53.

While vI have illustrated and described the preferred form of construction for carrying my invention into effect, this is capable of variation and modification without departing from the spirit of the invention. I, therefore, do not wish to be limited to the precise details of construction set forth but desire to avail myself of such variations and the ap ended claim.

Havlng described my invention, what I claim as new and desire to secure by Letters Patent is:

. An electric bulb socket comprising a nonconducting base, a` bulb receiving sleeve modifications as come within the .scopeof through one of the slots to resiliently engage the electrodes and thereby firmly hold the latter against the Walls of the socket 1 elements.

In testimony whereof I have Signed my name to this specification.

ARTHUR E. SCHUFFENHAUER. 

